:root {
  --default_color: #333;
  --theme-color: #ca2a1d;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-weight: normal;
}

body {
  width: 100vw;
  height: 100vh;
  font-size: 14px;
  font-weight: 400;
  color: var(--default_color);
  overflow: hidden;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    Helvetica Neue,
    Helvetica,
    Segoe UI,
    Arial,
    PingFang SC,
    Hiragino Sans GB,
    Microsoft Yahei,
    STHeiti,
    SimSun,
    sans-serif;
}
ul,
ol {
  list-style: none;
}
img {
  display: block;
  border: 0;
}
b,
strong {
  font-weight: 400;
}
i,
em {
  font-style: normal;
}
input,
button {
  outline: none;
  border: none;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
}
a {
  text-decoration: none;
  color: #666;
}
